title: Effect of measurement on the ballistic-diffusive transition in turbid media.
abstract: The dependence of the transition between the ballistic and the diffusive regimes of turbid media on the experimental solid angle of the detection system is analyzed theoretically and experimentally. A simple model is developed which shows the significance of experimental conditions on the location of the ballistic-diffusive transition. It is demonstrated that decreasing the solid angle expands the ballistic regime; however, this benefit is bounded by the initial Gaussian beam diffraction. In addition, choosing the appropriate wavelength according to the model's principles provides another means of expanding the ballistic regime. Consequently, by optimizing the experimental conditions, it should be possible to extract the ballistic image of a tissue with a thickness of 1 cm.
authors.forename: Ziv
authors.initials: Z
authors.lastname: Glasser
authors.forename: Andre
authors.initials: A
authors.lastname: Yaroshevsky
authors.forename: Bavat
authors.initials: B
authors.lastname: Barak
authors.forename: Er'el
authors.initials: E
authors.lastname: Granot
authors.forename: Shmuel
authors.initials: S
authors.lastname: Sternklar
mesh_terms: D004058:Diffusion; D004655:Emulsions / Q000737:chemistry; D008027:Light; D008029:Lighting; D008962:Models, Theoretical; D009391:Nephelometry and Turbidimetry; D061848:Optical Imaging / Q000295:instrumentation* / Q000379:methods*; D055095:Optics and Photonics / Q000295:instrumentation* / Q000379:methods*; D019047:Phantoms, Imaging; D010743:Phospholipids / Q000737:chemistry; D015203:Reproducibility of Results; D012542:Scattering, Radiation; D013024:Soybean Oil / Q000737:chemistry
chemical_list: D004655:Emulsions; D010743:Phospholipids; C545823:soybean oil, phospholipid emulsion; D013024:Soybean Oil